- Distribution/Transportation
- BNSF Corp.
- CDW Corp.
- DHL
- Schwan Food Co.
- HD Supply
- Hertz
- Motion Industries, Inc.
- Republic National Distributing
- Rexel
- Unigroup, Inc.
- Education
- Carnegie Mellon University
- Edison Schools
- Education Management Corp.
- Harvard University
- Long Island University
- McGill University
- Northern Alberta Institute of Technology
- United Independent School District
- University of Cincinnati
- University of Oklahoma
- Energy/Utilities
- Alliant Energy
- BP
- Chevron Corp.
- Halliburton Co.
- Marathon Oil Corp.
- NRG Energy, Inc.
- PG&E Corp.
- Schlumberger
- Shell Canada, Ltd.
- TXU Corp.
- Financial Services
- American Express
- Barclays Global Investors
- Compass Bank
- Depository Trust & Clearing Corp.
- Jefferies Group, Inc.
- Marsh, Inc.
- Northern Trust Corp.
- Putnam Investments
- State Employees' Credit Union
- Unum Group
- Food/Hospitality
- Carnival Corp.
- Chick-fil-A, Inc.
- Del Monte Foods Co.
- H.J. Heinz Co.
- Host Hotels & Resorts, Inc.
- J.M. Smucker Co.
- McCain Foods Ltd.
- Sara Lee Corp.
- Schwan Food Co.
- Wendy’s International
- Government
- California Highway Patrol
- City of Los Angeles
- Gunter Air Force Base
- KY Cabinet for Workforce Development
- Lawrence Livermore National Laboratory
- NASA
- NASD Regulation, Inc.
- State of Washington Dept. of Corrections
- US Department of Agriculture